diff --git a/TLYShyNavBar/TLYShyNavBarManager.h b/TLYShyNavBar/TLYShyNavBarManager.h
index b4484ab..080e4cc 100644
--- a/TLYShyNavBar/TLYShyNavBarManager.h
+++ b/TLYShyNavBar/TLYShyNavBarManager.h
@@ -9,6 +9,8 @@
 #import <Foundation/Foundation.h>
 #import <UIKit/UIKit.h>
 
+@protocol TLYShyNavBarManagerDelegate;
+
 /*  CLASS DESCRIPTION:
  *  ==================
  *      Manages the relationship between a scrollView and a view
@@ -55,6 +57,24 @@
 
 @property (nonatomic) BOOL disable;
 
+/* Use this to be notified about contraction and expansion events.
+ */
+@property (nonatomic, weak) id<TLYShyNavBarManagerDelegate> delegate;
+
+@end
+
+/* PROTOCOL DESCRIPTION:
+ * =====================
+ *     This protocol is used to notify an optional TLYShyNavBarManager's delegate
+ * when a contraction or expansion finishes animating.
+ */
+@protocol TLYShyNavBarManagerDelegate <NSObject>
+
+@optional
+
+- (void)shyNavBarManagerDidFinishContracting:(TLYShyNavBarManager *) shyNavBarManager;
+- (void)shyNavBarManagerDidFinishExpanding:(TLYShyNavBarManager *) shyNavBarManager;
+
 @end
 
 
diff --git a/TLYShyNavBar/TLYShyNavBarManager.m b/TLYShyNavBar/TLYShyNavBarManager.m
index 09682d1..bd3e011 100644
--- a/TLYShyNavBar/TLYShyNavBarManager.m
+++ b/TLYShyNavBar/TLYShyNavBarManager.m
@@ -315,10 +315,23 @@ static inline CGFloat AACStatusBarHeight()
     CGPoint newContentOffset = self.scrollView.contentOffset;
     
     newContentOffset.y -= deltaY;
-    
+
+    __weak typeof(self) weakSelf = self;
     [UIView animateWithDuration:0.2
                      animations:^{
-                         self.scrollView.contentOffset = newContentOffset;
+                         weakSelf.scrollView.contentOffset = newContentOffset;
+                     }
+                     completion:^(BOOL finished) {
+                         typeof(weakSelf) strongSelf = weakSelf;
+                         if (strongSelf.isContracting) {
+                            if ([strongSelf.delegate respondsToSelector:@selector(shyNavBarManagerDidFinishContracting:)]) {
+                                [strongSelf.delegate shyNavBarManagerDidFinishContracting:strongSelf];
+                            }
+                         } else {
+                             if ([strongSelf.delegate respondsToSelector:@selector(shyNavBarManagerDidFinishExpanding:)]) {
+                                 [strongSelf.delegate shyNavBarManagerDidFinishExpanding:strongSelf];
+                             }
+                         }
                      }];
 }